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Postsdbo
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    <p>Setting the objectValue for the NSTextField by itself does not get down to the model.</p> <p>I'll try to explain what I'm doing. In my app I started with a simple textfield that has an NSDateFormatter attached to it. It was bound to an NSDate and all was well. Later I wanted to add a popup calendar next to the text field so a user could click their date.</p> <p><a href="http://media.clickablebliss.com/billable/interface_experiments/new_date_picker.png" rel="nofollow noreferrer">http://media.clickablebliss.com/billable/interface_experiments/new_date_picker.png</a></p> <p>Now rather than hard coding this behavior I tried to be generic with the solution. I ended up writing a custom helper object. I would connect the helper to the textfield and the button on screen and then set the action of the button to openPopup: in the helper. When the user popped up a calendar view my code would bind the calendar view to the same object that the textfield was bound to with the following code:</p> <pre><code>// Set the binding of the date picker in the panel to the same binding as the controlToBeHelped NSDictionary *controlToBeHelpedBindings = [controlToBeHelped infoForBinding:@"value"]; [popupPanelDatePicker bind:@"value" toObject:[controlToBeHelpedBindings valueForKey:NSObservedObjectKey] withKeyPath:[controlToBeHelpedBindings valueForKey:NSObservedKeyPathKey] options:nil]; </code></pre> <p>This works great in my one project. In my new project I'd like to reuse this code with a twist. This time the NSDate can be nil. I'd like to agument my code so that if the user clicks on the button to pick a date when the date is currently nil I first set it to now and then show the popup.</p> <p>Thus, I need to edit the NSDate this control is bound to via an IBOutlet. Thanks.</p> <p>EDIT: Thanks to Peter I think I got this working:</p> <pre><code>if ([[controlToBeHelpedBindings valueForKey:NSObservedObjectKey] valueForKeyPath:[controlToBeHelpedBindings valueForKey:NSObservedKeyPathKey]] == nil) { [[controlToBeHelpedBindings valueForKey:NSObservedObjectKey] setValue:[NSDate date] forKeyPath:[controlToBeHelpedBindings valueForKey:NSObservedKeyPathKey]]; } </code></pre>
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    1. POGiven an IBOutlet to an NSTextField that is bound to some NSDate, how can I programatically set a new date?
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    1. USzorn
    1. USzorn
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    1. COThen you'll have to use infoForBinding: to discover the model, then use KVC to store the new date at that property. (Also, why'd you use a different account?)
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      1. USPeter Hosey
    2. CO(Post-edit) Yeah, my advice hasn't changed. Get the observed object and key path, use [observedObject valueForKeyPath:observedKeyPath] to check for nil, then use [observedObject setValue:[NSDate date] forKeyPath:observedKeyPath] if necessary.
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    3. COThanks this works great.
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